Filter-frame



No. emma. Patented sept. r3, |898.

R. AYMER GL D. J. NEVILL. FILTER FRAME.

Application filed Jan. 2b. 189s.,

(No Model.)

Immun @anhaben/M@ TH: Nanms Perses co., PHOTO-nwo.. wAsNxNowN. n, c4

' UNITED :STATES .PATENT EEICE.

ROBERT AYIIER, OE COLORADO CITY,A AND DAVID J. NEVILL, OE DENVER,

' COLORADO.

FILTER-FRAME. i

SPECIFICATION forming part of Letters Patent No 610,596, dated September `1,3, 1898.

Application filed January 20, 1898. Serial No. 667,320. (No model.) I

To all whom it Ina/y concern:

Beit known that we, ROBERT AYMER, a citizen of the United States of America, residing at Oolorado'City, in thecounty of El Paso, and

DAVID J. NEVILL,` a citizen of- Great Britain, residing at Denver, in the county of Arapahoe,

VState of Colorado, have invented certain new and useful Improvements in Filter-Frames;

and we do declare the following to be a full,

clear, and exact description of the invention,

such as will enable others skilled in the art.

to whichV it appertains to make and .use the same,'refgerence being had to the accompa-l nying drawings, and to the letters of refer-.

provide a filter-frame constructed of glass or' any acid-resisting material, such as porcelain; second, to provide a filter-frame constructed of glass or porcelain and adapted to be removably secured ina rotatable iltering-barrel, and, third, to provide a strong` and simply-constructed glass filter-frame that canbe placed in the filter-barrel and removed therefrom at the will of the 'operator through a manhole.'

We attain these Objects, by the mechanism illustrated and described in the accompanying drawings, in which- Figure lrep'resents a transverse cross-section ofa filter-barrel with a filter and lterframe arranged therein embodying our invention..y Fig. 2 is a'longitudinalcross-se tion throughline A'of'Figl and a fragment of Fig. l. Fig. 3 is a plan View ofthe grating. Fig. 4; is a plan view of the filter-bed.

Fig. 5 is a perspectiveviewof the supporting-v framework of the filter-bed. Fig. 6 is a perspectiverview of a fragment of one of the binding-ribs. Fig. 7 is a section through a fIlter-barreh'showing a modified arrangement l of the filter-frame 5 and Fig. 8 is a perspective view of the supporting-mat of the filter-bed of Fig. '7.

-Similar letters of reference refer to similar parts throughout the several views. l

Referring to Fig. 1, B designates an iron barrel, usually from three to siX feet in diameter and from six to ten feet long.

C is a valve controllin g the inlet-passage D. E is a valve controlling the outlet-passage F. Gis a trunnion, one bein gplaced at each end of thebarrel concentric with its axis;`

H is a manholefor entrance to the barrel. u I :designates a lining, of I lead,awhich we place entirely over the inner periphery of the barr`el.`V

J is a cleat, of glass or porcelain, lead or wood,`bolted lengthwise of the barrel yto its sides by-bolts K.

Transversely. across the bottom of the barrel we arrange a plurality of supportingd beams L, which are constructed! of glass. These beams we preferably make independent of one another. Each beam; however, is provided with laterally-extending wingsl L', with rabbeted terminal ends L2v or with (a groove in the end of one lateral Vextension and a tongue in the opposite direction, as illustrated in Fig. 5 at M. This makes 'each beam independent of the others and enables the sections to be. taken out of the filter-barrel or inserted through the manhole and also enables a frame to be made of Various widths for different-sized lter-barrels.` Through the lower edge of the beams we form several semicircular notchesLS, which form passages along thebottom of. the filter-barrel for the filtered solutions to the outlet-passage; TUpon the top and .bottom edges of eachbeam We placea rubber stripl N; whichactsas'a yielding seat for the beams and prevents rapid wearof the 'edges of the'beams aswell as of the lead lining. These beams extend entirely across the bottom of the filter-barrel. Upon the topY of these'beams we place a glass bedplate N', which extends entirely across the bottom of the barrel and is fitted quite snugly to its sides. This glass bed-plate is full of small holes N 2 of about three-eighths of an inch in diameter and placed as close together as the strength of the material will allow with the duty to be performed and the Weights VVto be borne.'V This filter-bed is made in sections of suitableV sizeV for Veasy admittanceV to the barrel through the manhole, and it actsY Vas a support Vfor the filter O, which is composed of a piece of asbestos 'cloth or bur-V lap, or it may consist of a finely-perforated lead plate or of any other suitable filtering Y thickly perforatedV :with elongated holes P,

as shown in Fig. 3. The grating is made in sections, and each section is made small enough to pass through Vthe manhole, andthe gratingV extends entirely over the filtering material and fits against all sides of the barrel and prevents the filtering materiallsfric- Y tional contact with the ore. In order to bind the several parts of Vthe ltering-frame to-` Y gether,we place a number of glass deck-beams Y Y Q over the grating, spacing them a short distanceapart, and slope theirtop edges to eX- tendunder the cleats and leave a space in which is fitted a Wedge R, by which the several parts are wedged tightly against the barrel.V The several parts of the lter frame are thus keyed rigidly to the barrel and are Ywedged tightly together, and there isV no dan ger of their displacement and disarran gement as the barrel rotates.

' In Fig. 7 We illustrate a modiedarrangement of the filtering device and of the use and adaptability of glass as a material for a filter'- frame of this form of construction as Well as of any adapted for a filter-frame. In this arrangement S and S' are cleats of glass similar to those shown in Fig. l. They are also bolted to the barrel. The bolt-heads are recessed into the glass and may be covered and protected from the action of the acids by filling the recesses with a suitable cement. T designates a bed-mat, preferably of rubber, although this plate could also be made of glass, if desired. This bed-mat is of equal thickness, perforated evenly throughout its surface to allow the filtered solutions to pass to the lining Aof the barrel, and in order to allow the solution to ioW under the mat We form the side of it that lies against the lead lining with corrugations U, as shown' in Fig. 8. By this arrangement the filtering solution has free passages to the discharge-outlet V, Which is controlled by a valve W. Upon this rubber mat We place a perforated glass bed-plate X, which is curved to lit the curve of the barrel and bear evenly on the mat. Over the surface of the glass bed-plate We place a filtering-diaphragm Y and upon this a grating Z, curving it to lie flat and rest evenly over the surface Upon the top of this filter We Y of the Vfiltering material. VWe then Vdrive wedges Z between the cleats and the ends of the'glass perforated bed-plate and thev grating, which key andwedgethe filter-frame Y Y Y.

against the lining of the barrel.V In this arrangementV the deck-.beams are dispensed 5 with. V.TheV filter-barrels Vare mounted on trunnions or rings and are arranged to be ro- Y tated. They are charged with ore-pulp and sulfuric acid, chlorid of lime, and Waterg'and then rotated With the charge from three to fourhours.V VTheinlet-valve isthen connected to a supply of air or Water under pressure, and the metallic solution is forced through thelterand its frame and discharges through the outlet-valve. The acids attack and de- Vstroy all iron,rWood, and many other materials.. Rubberand leadV will, however, With- Vstand their action, but areV too expensive to 1 construct theentire iilterfra1ne of.

Glass is by far the best material, as it is capable of being'molded accurately in the various parts of the filter-frame Vand is much cheaper than either lead or rubber, as rubber, if used, must be pure.

While We have shoWntWo slightly-di fferent arrangements of filter-frames constructed of;

glass, We do not Wish to be limited to the use of Y glass or porcelain or a vitreous material or to any particular character of construction of filter-.frame or arrangement, but claim the right to theexclusive useof material of this character, and especially of glass, with any form of construction, although preferably With the constructionV and arrangement of: filter-frame shown. We preferably use glass, as it is cheaper Vthan porcelain and is the better material of the two.

Having described our invention, what We claim as new, and desire to secure by Letters Patent, is-

1. The combination with the ltering-barrel, of a frame composed of independent glass beams fitting a segment of the inside of a filterbarrel having laterally-extendin g Wings With rabbeted ends or tongues and grooves interlocking With one another and having through their lower edges passages for the filtering medium and a rubber cushion on each edge of each beam of said frame, with a glass perforated bed-plate resting on said glass frame, a filtering-diaphragm of any suitable material resting on said glass bed-plate, a glass grating resting on said filtering medium and means for removably securing the several parts in operative relation in said barrel, substantially as described.

2. In a filter-barrel, the combination of a rubber grating having a corrugated surface in contact With the curved inner lining and periphery of said filter-barrel adapted to allow the filtering solutions to run along and down the lining of said barrel, a perforated bedplate of glass or porcelain curved concentric with the inner periphery of said barrel and resting on said rubber grating, a ltering In testimony whereof We affix our signamedium on said glass bed-plate, a curved tures in presence of Witnesses. glass grating resting on said itering medium, two oppostely-disposed cleats secured 5 lengthwise of said barrel to its inner periphery adjacent to the ends of said curved glass Witnesses:

bed-plate and grating and Wedge-keys be- C. A. SHEETZ,

tween said ends and said Cleats adapted to C. W. BLANEY.

key said members against the barrel, sub- BESSIE THOMPSON,

1o stantially as described. MELVIN E. PETERS. 

